Reading The Set Date; Before Measuring; Common Sources Of Error - Microlife BP3AA1-2 Instruction Booklet

9. Press the User/Time button again. The
last two characters (Minutes) now blink.
DATE/TIME
10. The minutes can now be entered by
pressing the MEMORY button. (Example: 30
x presses advances the time from 0 to 30
minutes)
MEMORY
5. MEASUREMENT PROCEDURE

5.1. Before measuring:

• Avoid eating, smoking as well as all forms of exertion directly before the measurement. All these
factors influence the measurement result. Find time to relax by sitting in an armchair in a quiet
atmosphere for about ten minutes before the measurement.
• Remove any garment that fits closely to your upper arm.
• Always measure on the same arm (normally left).
• Compare measurements taken at the same time of day, since blood pressure changes during the
course of the day.

5.2. Common sources of error:

Note: Comparable blood pressure measurements always require the same conditions! Conditions
should always be quiet.
• All efforts by the user to support the arm can increase blood pressure. Make sure you are in a com-
fortable, relaxed position and do not flex any of the muscles in the measurement arm during the
measurement. Use a cushion for support if necessary.
• If the arm artery lies considerably lower or higher than the heart, an erroneously high or low blood
pressure will be measured! Each 15cm (6 inch) difference in height between your heart and the cuff
results in a measurement error of 10 mmHg!
• Cuffs that are too narrow or too short result in false measurement values. Selecting the correct cuff
is extremely important. Cuff size is dependent upon the circumference of the arm (measured in the
center). The permissible range is printed on the cuff. If this is not suitable for your use, please con-
tact Microlife USA. Large cuff sizes are sold separately.
Note: Only use clinically approved Microlife Cuffs!
• A loose cuff or a sideways protruding air pocket causes false measurement values.
• With repeated measurements, blood accumulates in the arm, which can lead to false results.
Consecutive blood pressure measurements should be repeated after a 1 minute pause or after your
arm has been held up in order to allow the accumulated blood to flow away.
Please note, clinical studies have proven the Microlife Averaging Mode (MAM) system with a 15 second wait
period between the second and third measurements. If you decide to retake your MAM measurement
again, be sure to wait at least one minute before repeating a MAM measurement.

4.5. Reading the set date

After all settings have been made, click the
User/Time button once. The date is briefly
displayed and then the time. The input is
now confirmed and the clock begins to run.
DATE/TIME
MONTH-DATE
1
1
7